class Testicek
  def initialize(code)
    @code = code
    @sold = 0

    unless @code =~ /(^P|Q|R|S|T)(A|E|I|O|U)[001-450$]/
       raise Exception.new("#{@code}: Not enough items in store")
    end
  end
end

t = Testicek.new("fsdfdsf")